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Match each block of modern periodic table with the valence subshell being filled:

A1-A, 2-B, 3-C
B1-B, 2-A, 3-C
C1-C, 2-B, 3-A
D1-A, 2-C, 3-B
Answer & Solution
Correct answer: A. 1-A, 2-B, 3-C
Groups 1-2 are s-block. Groups 13-18 are p-block. Groups 3-12 are d-block transition metals.
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